feat(webkit): add CodeBlock border prop + show file type in Icons docs

[gab-az]

Summary

Adds a border prop to the data/code-block component and wires it through the spec, tests, and Storybook docs — mirroring the pattern used for data/table.

• border?: boolean (default true) on CodeBlock, mirrored to a data-border attribute with data-[border]: Tailwind variants. On by default (preserves current appearance); set :border="false" to render the block flush inside a surface that already frames it. Non-breaking.
• Content height changed from a fixed h-[320px] to max-h-[320px], so short snippets fit their content while taller ones still scroll at 320px.
• Spec (.specs/code-block.md): new border Props row, a Borderless story entry, updated height wording, recomputed checksum.
• Tests: data-border present by default / absent when :border="false".
• Webkit stories: border argType + a Borderless story.
• Foundations Icons docs: swapped the local CodeBlock helper for the real @aziontech/webkit/code-block, and the Usage example now shows the HTML file type via a fileName: 'index.html' filename bar.

Notes

• No new dependencies. No breaking changes (the prop defaults to the current bordered look).
• The h-[320px] → max-h-[320px] change is behavioral, not an API break; existing long-code stories remain visually unchanged (still capped at 320px + scroll). Visual-regression snapshots may want a quick re-baseline.
• html is not in the code-block language→icon map, so index.html shows the generic pi pi-file icon; a dedicated code icon can be added in a follow-up if desired.